Torch.



.- adsense. I

STATES PATENT OFFICE. -v

' wearer c. BUOKNAM, or JERSEY CITY, New arrasar, .assrenon 'ro DAVIS-BOUnNoN- vILLn COMPANY, or NEW YORK, N. Y., A CORPORATION or NEW YORK.

TORCH.

Specification of Letters Patent.

Patented Sept. '12, 1916.

Application filed March 18, 1914. Serial No. 825,546.

To cZZ whom t may concern Be it known that LNVORTHY C. BUCK- Naar, a citizen of the United States, and a .resident of Marion, Jersey City, in the county of Hudson, and State of New Jersey,

" have invented certain new and useful Improvements in Torches, of which the followy ing is .a specification.

The, invention comprises certain improve ments in'oxy-acetylene welding torches, the

"object beingV to provide a simple and advantageous construction providing for water cooling and enabling the mixture of gases to be delivered in a plurality of jets arranged ink alinement, whereby the heating action is convned to thel weld and extended for a certain distance along the same.

,In the accompanying drawings illustrating the preferred embodiment of the lnvention: Figure l is a longitudinal section through 'the'V torch, the tipv at the forward end and ,the connections at the rear end being shown inv elevation; Fig. 2'isa longitudinal section through the forward part of the torch,

taken in a rplane at right angles to that of Fig.-1; Fig. 3 is a cross-section on the line 3-3 of Fig. 2; Figi 4 is a cross-section on .the line 4 4 of Fi'g. 2; Fig. 5 is a front end view of the tip; Fig. 6 is a fragmentary elevation illustrating the mode of use; and Fig.` 7A is a longitudinal section through the rear portion of' the torch at right angles to thesection ofFig. 1. 1

The torch'comprises a body 1 and a removable and replaceable tip 2. Any one of a plurality of thesetips of varying lengths and having passages of varying sizes may inserted in the body in accordance with the particular requirements of the work in yThe bodyl comprises a cylindrical casing 3, vhaving a head 4 .and a connection block 5 secured in a Rater-tight manner in its opposite ends. 'The connectionblock is provided with valved connections 6 and 7 for the attachment' of iiexilgle tubes leading '13 with the side of the same recess.

The tip as illustrated is composed of three pieces, a nozzle portion 14, a seating portion 15 for insertion in the socket 12, and a sleeve 16. The nozzle portion is formed with a rearwardly-projecting reduced eX- tension or stem 17, the rear end of which is screw-threaded for engagement with a corresponding recess in the forward end of purpose of keeping the tipcool, water being supplied to and delivered 'from the chamber by means of longitudinal passages 21 and 22 respectively, drilled in theseating portion 15. The` rear ends ofthese passages open into separate grooves 23, 24 formed in the sides of the conical rear portion ofthe part 15, these grooves in turn being adapted to communicate with apertures 25, 26, leading from water chambers 27, 28 in the head into opposite sides ofthe socket 12. The said chambers 27, 2S are preferably formed by cutting away opposite sides of the Vhead 4 where it is received within the casing 3, which thus constitutes the outer. wall of these chambers. The chamber 27 communi- Oates by a supply passage 29 with the open interior of the said casing, which in turn is supplied with water by a suitable connection 30 projecting rearward from the connection block 5. A delivery pipe 31 is secured at its forward end in a bore 32 coml mimica-ting withk the chamber 28 and at its rear end communicates with a second Water connection 33. The said connections 30 and are designed to receive iiexible' tubing, whereby water may be brought from a suitable source and conducted away to an appropriate point of discharge. AVThe cooling water enters by way of the connection 30, fills the casing 3, passes thence by the opening 29 into the chamber 27, thence by ports and passages 25, 23 and`21 into space 18, thence by ports and passages 22- 24 and `26 into chamber 28, and thence through the outlet tube and connection 31, 33.

The portions 14 and l5 of the tip are provided with longitudinal registering bores constituting a mixing passage 34:.v Separate inlet ports 35 and 36 at the rear end of the tip admit oxygen and acetylene, respectively, to this mixing passage, Athe torch being of that type in which all of the ports and passages necessary to the min-` gling and delivery of the gases are combined in the removable and replaceable tip, so that all these factors may be changed in proper proportion by the mere taking out of one tip and putting in another. As shown, there is a single oxygen port 35 opening through the rear end of the tip in line with the mixing passage 34, and aI plurality of lateral acetylene ports 36 com municating at their outer ends with an an-l nular groove 87 formed in the conical joint surface of the tip. The mixing passage is thus supplied with oxygen from the conduit 8, l0, and acetylene from the conduit 9, ll, 13, the conical sealing surfaces on the head and tip insuring that there can be no mingling of the gases before their entrance into the latter. The tip is held in place by av bushing 38, which screws into the socketed head and bears against a forwardly facing shoulder 39 on the tip.

Instead of a single jet outlet, the tip is formed with a plurality of jet passages 40, 4l, 42, all supplied by the common mixing passage 34 and having their oriiices all in alinement, as clearly shown in, Fig. 5. These jet passages are formed by drilling converging bores from the forward end of the nozzle portion 14 to the mixing passage 34, this being a simple mode of construction and having the advantage that the jets are delivered in diverging relation. Thus, as shown in Fig; 6, when the torch is disposed for operation with the tip at'an inclination, the forward jet passage 40 is arranged at a comparatively low angle to the "work, so that its iiame plays forwardly alongthe seam, securing a good preheating eect, while the succeeding flames are directed at successively higher angles to the Work so as to insure an intense welding heat.` The jet orifice or orifices in advanV are preferably larger than the orice or o .iiices in the rear, since the leading haine opgrates upon relatively cold metal and consequently should have greater heating capacity than those which follow to complete the weld. The forward end of the tip is formedA at an inclination to the longitudinal axis, so that when the torch is' in use, with the tip disposed obliquely in order to direct the. heat forwardly along the seam, the several jet orifices may be disposed at substantially the same distance from the work or at not too greatly differing distances, as indicated in Fig. 6. Preferably this-oblique end of the tip is formed in a series ci' steps, each ori- 'ered by said casing and providediwith pas-l y mesures iiceopening through a separate step, but this may -be otherwise. 3, il" It will be apparent that the form of tor't'jii body herein illustrated is not necessarily limited for use ywith the particular form df tip shown, and, conversely, 'that the tip illustrated may lbe mounted a modill.. form of body. While iny thev drawing jet orilices are illustrated, I ,wish it to bfg, understood that two ora greater number, may beV employed. p

vVhat I -claim as y'newisz y o 75 1. A` welding -torch comprising a body having conduits for oxygen and a combus` tible gas, respectively, and a removable and, replaceable tip forming a sealk between fiile' *v ends Vof said conduits and having a mixing passage provided inthe rear ofthe tipfwith t separate inlets for the two kinds of gases and a plurality of jet outlets extending in diverging relation `from said 'mixing passage and delivering in spaced relation `at the forward end .of the tip. y 2. A tipy for welding torches comprising a rearseating portion, a forwardnozzle portion having a rearwardly-projecting reduced extension screwed into said'seating portion, and a sleeve held between 4said portions and inclosing a chamber around said extension, a longitudinal mixing passage formed in said nozzle and'seating portions, separate inlets vfor oxygen and 4a combustible gas in said seating ortion communi-l cating with the rear end-o said mixing passage, a multiplicity of alined -jet orifices in saidnozzle portion communicatingwith the forward end of said mixing passa e, and passages for a cooling 'medium lea -ng to.y and from said chamber. 3. A torch comprising a body formed. of A a casing havinga head and a.- connectionv block inserted in'its "opposite ends, said 105 head having gas passages, pipes for oxygen and a ,combustible gas respectively leading through the interior of said4 casing from said connection block to the passages of said v head, and a removable tip-formed wthpas- ,110 sages ada ted to comrnil'nicateA with the gas '1. passages 1 the head and having' also a i water chamber and passages-in tlietip lead-l ing to and from the saine, said headhaving water chambers formedifn its-sides andcov-l sageslto communicate'with-'said passages Ain., the tip. o. 1" 'f t In witness vwhereof I"havesi my l n name in lthe presence or two-su sci fgbing-1.20 ,witnesses r i A WORTHY o. BUoxNM.' V 

